EP0330223A2 - Nachrichtenverteilungssystem - Google Patents

Nachrichtenverteilungssystem Download PDF

Info

Publication number
EP0330223A2
EP0330223A2 EP89103256A EP89103256A EP0330223A2 EP 0330223 A2 EP0330223 A2 EP 0330223A2 EP 89103256 A EP89103256 A EP 89103256A EP 89103256 A EP89103256 A EP 89103256A EP 0330223 A2 EP0330223 A2 EP 0330223A2
Authority
EP
European Patent Office
Prior art keywords
information
transmission
terminal devices
node station
error check
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89103256A
Other languages
English (en)
French (fr)
Other versions
EP0330223B1 (de
EP0330223A3 (en
Inventor
Osamu Isono
Toshimasa Fukui
Tetsuo Nishino
Tetsuo Tachibana
Eisuke Iwabuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of EP0330223A2 publication Critical patent/EP0330223A2/de
Publication of EP0330223A3 publication Critical patent/EP0330223A3/en
Application granted granted Critical
Publication of EP0330223B1 publication Critical patent/EP0330223B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0093—Point-to-multipoint

Definitions

  • the present invention relates to an informa­tion distribution system having a node station and a plurality of terminal devices connected through trans­mission lines to the node station.
  • the system according to the present invention is used, for example, for a digital data exchange (DDX) network, an integrated services digital network (ISDN), an information system network (INS), and the like.
  • DDX digital data exchange
  • ISDN integrated services digital network
  • INS information system network
  • distribution information is distributed from a node station to a plurality of terminal devices taking the requirements such as X25 Protocol for DDX network, I Interface Bch Packet for ISDN network, and the like into consideration.
  • an information distribution system having a node station and a plurality of terminal devices connected through transmission lines with the node station, in which the node station includes a distribu­tion information storage unit for storing information which is to be distributed to the plurality of terminal devices, and a re-transmission request response unit for re-transmitting information in question in response to requests from the plurality of terminal devices.
  • Each of the terminal devices includes an error checking unit for checking for transmission failure in the data transmission based on the received information, and the transmitted information is divided into a plurality of blocks, after the completion of receptions of all block-form information, a re-transmission of information is requested, and then, based on this request, the re-transmission of information is carried out.
  • a prior art information distribution system having a node station and a plurality of terminal devices is described below with reference to Figs. 1 and 2.
  • a sequence of operation of the prior art system of Fig. 1 is illustrated in Fig. 2.
  • the control portion 14 of the node station 1 transmits a set-up signal to each of the terminal devices 21, 22, ... 2n to which the distribution information is to be distributed, and the terminal devices then send back acknowledgement (ACK) signals indicating the completion of the set-up, to the node station, after which, the process proceeds to the data transmission phase.
  • ACK back acknowledgement
  • the close points 151, 152, ... 15n of the distribution switch 15 are selectively closed by the operation of the control portion 14, and the output of the error correction code adding circuit 17 is supplied through the contacts of the distribution switch 15 to the transmitting/receiving portions 161, 162, ..., 16n for supplying the terminal devices 21, 22, ... 2n to which the distribution information is to be distributed with the transmitted information.
  • transmission data constituted by the data No. 1 and the added error correction code is transmitted through the distribution switch 15 to the transmitting/­receiving portions 161, 162, ... 16n, and the trans­mitted data is stored in the transmission buffer of the transmitting/receiving portion.
  • the transmission data is read from the transmission buffer of the trans­mitting/receiving portion under the control of the control portion 14, and the read transmission data is transmitted from the transmitting/receiving circuit of the transmitting/receiving portion through the trans­mission lines 31, 32, ... 3n to the terminal devices 21, 22, ... 2n.
  • the trans­mission data No. 1 is stored in the receiving buffer 215 in the terminal device 21, and is supplied to the error correction code checking circuit 213 in which the error checking is carried out.
  • an OK signal indicating the absence of error is sent from the transmitting/receiving circuit 217 to the transmitting/receiving circuit 161C in the trans­mitting/receiving portion 161 of the node station 1.
  • the output portion 216 for example, a printer, a display device, or the like, in the terminal device 21 with the data No. 1 which is stored in the receiving buffer 215 to effect a visible display.
  • the node station 1 When the node station 1 receives response signals, such as OK signals, from all the terminal devices 21, 22, ... 2n, the next data No. 2 is transmitted from the node station to the terminal devices in a similar manner as in the case of the data No. 1.
  • response signals such as OK signals
  • the next data No. 2 is transmitted from the node station to the terminal devices in a similar manner as in the case of the data No. 1.
  • an NG signal indicating the occurrence of a failure is sent from the terminal device No. 2 to the node station 1.
  • the node station 1 which has received the above-mentioned OK and NG response signals transmits the next data No. 3 to the terminal devices 21, 22, ... 2n.
  • the data No. 2 with accompanying error correction code is re-transmitted to the terminal device No. 2 which sent the NG signal, prior to the transmission of the data No. 3 with accompanying error correction code.
  • the data No. 2 the first transmission of which to the terminal device No. 2 has failed to be correctly received by the receiving buffer, is re-transmitted to the terminal device No. 2 and stored therein as correct data.
  • FIG. 3 An information distribution system having a node station and a plurality of terminal devices according to an embodiment of the present invention will now be described with reference to Fig. 3.
  • the operation of the error correction code calculation circuit used for the system of Fig. 3 is illustrated in Fig. 4, and a sequence of operation of the system of Fig. 3 is illustrated in Fig. 5.
  • the system of Fig. 3 is constituted by a node station 1, a plurality of terminal devices (No. 1, No. 2, ... No. n) 21, 22, ... 2n, data transmission lines 31a, 32a, ... 3na, and control signal transmission lines 31b, 32b, ... 3nb.
  • the node station includes a distribution information storage portion 11, an error correction code calculation circuit 12, an error correction code group holding storage 13, a control portion 14, a distribution switch 15, and transmitting/­receiving portions (No. 1, No. 2 ... No. n) 161, 162, ... 16n.
  • the terminal device (No. 1) 21 includes a control signal transmitting/receiving portion 211, an error correction code holding storage 212, an error correction code checking circuit 213, an error register 214, a receiving buffer 215, and an output portion 216.
  • the terminal device 21 is connected to the transmitting/receiving portion 161 of the node station 1 through the data transmission line 31a and the control signal transmission line 31b.
  • the data transmission line 31a and the control signal transmission line 31b may be the same line used in a time sharing manner.
  • the distribution information storage portion 11 stores the distribution information which is supplied from the preceding station and is to be distributed to the terminal devices 21, 22, ... 2n.
  • the error correction code calculation circuit 12 produces an error correction code, such as a cyclic redundancy code (CRC), for each data block No. 1 to No. m, of, for example, 2 K Byte, which is a unit of transmission of the distribution information.
  • the group of error correction codes produced consisting of the error correction codes ECC-1, ECC-2, ... ECC-m regarding all of the produced data blocks No. 1, No. 2, ... No. m, is stored in the error correction code group holding storage 13.
  • control portion 14 supplies the control signal transmitting/­receiving member 161a of the transmitting/receiving portion 161 with a set-up signal.
  • This set-up signal is transmitted together with the error correction code from the error correction code group holding storage 13 to a terminal device through the control signal transmission line 31b.
  • a sequence of set up signal, error correction code group ECC-1, ECC-2, ... ECC-m, and an error correction code ECC-0 is transmitted from the transmitting/receiving portion to the terminal device through the control signal transmission line.
  • ECC error correction code
  • CRC cyclic redundancy code
  • the error correction code group is separated by the control signal transmitting/receiving portion 211 and the separated error correction code group is written into the error correction code holding storage 212.
  • the terminal device 21 then sends back an acknowledgement (ACK) signal indicating the completion of receiving of the set-up signal and the error correction code group in the node station 1.
  • ACK acknowledgement
  • the node station 1 Upon receiving the ACK signal sent back from all the terminal devices to which the distribution informa­tion is to be distributed, the node station 1 is brought to the data transmission phase in which the first data block No. 1 of the distribution information is read from the distribution information storage portion 11 and the first read data block No. 1 is supplied to the distribution switch 15 as shown in Fig. 5.
  • each of the close points 151, 152, ... 15n is selectively made on to enable the transmission of the distribution information to a terminal device to which the distribution information is to be distributed through a data transmission line based on the connection information from the control portion 14.
  • the first data block No. 1 read from the distribu­tion information storage portion 11 is transmitted simultaneously through the distribution switch 15 to the terminal devices to which the distribution information is to be distributed, when the transmission of the first data block No. 1 is completed, the second data block No. 2 is transmitted, and then the third, fourth, ... m-th data blocks are successively transmitted from the distribution information storage portion 11 to the terminal devices 21, 22, ... 2n.
  • the error checking of the data block Nos. 1, 2, ... m for each of the received data blocks is carried out by the error correction code checking circuit 213, and the detected error is written into the error register 214 to be stored therein.
  • the node station 1 When all of the transmissions of the data blocks from the node station 1 are completed, the node station 1 is brought to a transmission confirmation and re-transmission phase as shown in Fig. 5, in which it is determined, with regard to all of the terminal devices to which the distribution information was distributed, whether or not the receipt of all data blocks has been completed normally.
  • control signal transmitting/receiving member of the transmitting/receiving portion 162 When the control signal transmitting/receiving member of the transmitting/receiving portion 162 receives the NG signal from the terminal device No. 2, information indicating the terminal device from which this NG signal is transmitted is supplied from the transmitting/receiving portion 162 to the control portion 14. In the distribution switch 15, the ON state of the contact for the terminal device from which this NG signal is transmitted is maintained, while each of the contacts for the terminal devices from which OK signals are transmitted is set to an OFF state.
  • the data block Nos. 1, 2, ... m are then sequen­tially read from the distribution information storage portion 11 and the read data blocks are supplied to the distribution switch 15 by the control portion 14.
  • the data block Nos. 1, 2, ... m are sequentially re-transmitted through the contact of the maintained ON state to the terminal device No. 2, as shown in the re-transmission phase in Fig. 5.
  • this terminal device When distribution information is correctly received by a terminal device, this terminal device transforms the received distribution information into visible information by an output portion such as a printer, a display device, or the like in the terminal device by using the distribution information stored in a receiving buffer in the terminal device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
EP89103256A 1988-02-25 1989-02-24 Nachrichtenverteilungssystem Expired - Lifetime EP0330223B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63040820A JPH0756976B2 (ja) 1988-02-25 1988-02-25 情報分配方式とその送信局および端末装置
JP40820/88 1988-02-25

Publications (3)

Publication Number Publication Date
EP0330223A2 true EP0330223A2 (de) 1989-08-30
EP0330223A3 EP0330223A3 (en) 1990-05-09
EP0330223B1 EP0330223B1 (de) 1993-08-11

Family

ID=12591296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103256A Expired - Lifetime EP0330223B1 (de) 1988-02-25 1989-02-24 Nachrichtenverteilungssystem

Country Status (5)

Country Link
US (1) US5007055A (de)
EP (1) EP0330223B1 (de)
JP (1) JPH0756976B2 (de)
CA (1) CA1338447C (de)
DE (1) DE68908204T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315962A (en) * 1996-07-31 1998-02-11 Int Mobile Satellite Org Method and apparatus for transmitting data
US11148369B2 (en) 2016-08-31 2021-10-19 New-Tec Integration (Xiamen) Co., Ltd. Method for wrapping edge of composite board

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5969704A (en) * 1990-09-04 1999-10-19 Mikohn Gaming Corporation Configurable led matrix display
US5894547A (en) * 1991-06-27 1999-04-13 International Business Machines Corporation Virtual route synchronization
US5613065A (en) * 1992-02-19 1997-03-18 Fujitsu Limited Information broadcasting system having reception error minimizing facility
JP3087602B2 (ja) * 1995-05-02 2000-09-11 ヤマハ株式会社 通信カラオケシステム
GB2372680B (en) * 2001-02-27 2003-02-19 3Com Corp Calculation and transmission of error check codes
US20040158794A1 (en) * 2002-07-19 2004-08-12 Niesen Joseph W. Reduced overhead CRC functionality for packets and link layer superframes
US8351290B1 (en) * 2008-09-12 2013-01-08 Marvell International Ltd. Erased page detection
JP5380978B2 (ja) * 2008-09-26 2014-01-08 富士通株式会社 伝送装置、伝送装置の制御方法および伝送装置の制御プログラム
CN108961716B (zh) * 2018-07-25 2020-07-28 安徽江淮汽车集团股份有限公司 一种基于ZigBee的无线抄表系统
KR102828624B1 (ko) * 2019-06-05 2025-07-04 에스케이하이닉스 주식회사 크로스토크로 인한 데이터 에러가 억제되는 데이터 전송 시스템 및 데이터 전송 방법

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979719A (en) * 1973-04-02 1976-09-07 Texas Instruments Incorporated Multiple block binary synchronous duplex communications system and its method of operation
JPS5333520A (en) * 1976-08-20 1978-03-29 Toshiba Corp Signal transmission unit
US4422171A (en) * 1980-12-29 1983-12-20 Allied Corporation, Law Department Method and system for data communication
JPH073978B2 (ja) * 1986-10-28 1995-01-18 株式会社日立製作所 一斉通信方式
JPH0771088B2 (ja) * 1987-04-06 1995-07-31 古河電気工業株式会社 多重伝送方式

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315962A (en) * 1996-07-31 1998-02-11 Int Mobile Satellite Org Method and apparatus for transmitting data
GB2315962B (en) * 1996-07-31 2001-07-04 Internat Mobile Satellite Orga Method and apparatus for transmitting data
US7043196B1 (en) 1996-07-31 2006-05-09 Inmarsat Ltd. Method and apparatus for transmitting data
US11148369B2 (en) 2016-08-31 2021-10-19 New-Tec Integration (Xiamen) Co., Ltd. Method for wrapping edge of composite board

Also Published As

Publication number Publication date
US5007055A (en) 1991-04-09
EP0330223B1 (de) 1993-08-11
JPH01218148A (ja) 1989-08-31
DE68908204T2 (de) 1994-01-05
EP0330223A3 (en) 1990-05-09
CA1338447C (en) 1996-07-09
JPH0756976B2 (ja) 1995-06-14
DE68908204D1 (de) 1993-09-16

Similar Documents

Publication Publication Date Title
US4896151A (en) Simultaneous communication method and system
US4058681A (en) Information transmission system
JP2925678B2 (ja) データ通信方法及びデータ通信システム
US4439859A (en) Method and system for retransmitting incorrectly received numbered frames in a data transmission system
EP0393314B1 (de) Asynchrones Übertragungsverfahren und Vorrichtung mit hoher Datenrate
EP0330223B1 (de) Nachrichtenverteilungssystem
US6292470B1 (en) Data transmission system and method utilizing history information corresponding to correctly received frames
EP0418866A2 (de) Zur Ausführung einer Wiederholungskontrolle pro Zeiteinheit fähiges Signalübertragungssystem
US5003460A (en) Method for the transmission of connection data stored in a communication switching system to a data processing system
JPH01834A (ja) 全二重通信方式
JPH0530115A (ja) ポーリングシステム
JP3207445B2 (ja) ファクシミリ装置
JPH06101723B2 (ja) デ−タ伝送方式
JPH08116331A (ja) データ伝送制御方法
JP2524658B2 (ja) メッセ―ジ再送方法
JPH0496534A (ja) Ｈｄｌｃにおける選択再送方式
JPH0771089B2 (ja) 通信システム
JPH04124933A (ja) 順次同報データ検証方式
JPH04273736A (ja) パケット通信システムおよびパケット再送装置
JP2775016B2 (ja) 通信端末
JP2674922B2 (ja) 複数の操作端末間のデータ伝送装置
JPS5857846A (ja) 情報フレ−ム再送方法
JPH04179331A (ja) 同報伝送方式
JPH0522314A (ja) データ伝送装置
JP2001189714A (ja) データ伝送システム

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19900531

17Q First examination report despatched

Effective date: 19920624

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 68908204

Country of ref document: DE

Date of ref document: 19930916

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960125

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960215

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960227

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970224

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19971030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19971101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST